We have developed an appearance-design-CAD-coupled simulation framework that will enable engineers to perform analysis simulations during the appearance design process. This is not only a prototype process, but also the most innovative product design process to date. We applied multi-resolution representation technology to an automatic mesh generation system, in order to obtain low-resolution analysis meshes from high-resolution appearance design meshes. Because engineers are able to design appearance and function all at once, we can eliminate redesigns caused by design defects in the original function design process.